1. Differentiable function and partial differential equations;Ding,1983
2. Partial differential equations of parabolic type;Friedman,1964
3. On the blowing up of solutions of the Cauchy problem for ut = Δu + u1+α;Fujita;J. Fac. Sci. Univ. Tokyo, Sect. I,1966
4. Non-uniqueness for a semilinear initial value problem;Haraux;Indiana Univ. Mathematics J.,1982